Synthesis of mesoporous spherical γ-Al2O3 particles with varying porosity by spray pyrolysis of commercial boehmite

Jaehyung Choi; Kye Sang Yoo; Sung Don Kim; Hyung Kyu Park; Chul Woo Nam; Jinsoo Kim

doi:10.1016/j.jiec.2017.07.007

Synthesis of mesoporous spherical γ-Al₂O₃ particles with varying porosity by spray pyrolysis of commercial boehmite

Jaehyung Choi, Kye Sang Yoo, Sung Don Kim, Hyung Kyu Park, Chul Woo Nam, Jinsoo Kim

Dept. of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Mesoporous spherical γ-Al₂O₃ particles were prepared by spray pyrolysis of commercial boehmite without the use of templating materials. Before spray pyrolysis, a boehmite slurry was prepared through thermal acid treatment of commercial boehmite with various concentrations of HNO₃. The spray pyrolysis process produced spherical γ-Al₂O₃ particles with a size of 1 μm regardless of the pretreatment conditions. However, the dominant pore size of the produced γ-Al₂O₃ particles shifted from 35 nm to 3.5 nm when the molar ratio of [HNO₃]/[AlOOH] increased from 0.06 to 0.24 during thermal acid treatment.

Original language	English
Pages (from-to)	151-156
Number of pages	6
Journal	Journal of Industrial and Engineering Chemistry
Volume	56
DOIs	https://doi.org/10.1016/j.jiec.2017.07.007
State	Published - 25 Dec 2017

Keywords

Boehmite
Mesoporous
Phase transformation
Spray pyrolysis
γ-Alumina

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10.1016/j.jiec.2017.07.007

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title = "Synthesis of mesoporous spherical γ-Al2O3 particles with varying porosity by spray pyrolysis of commercial boehmite",

abstract = "Mesoporous spherical γ-Al2O3 particles were prepared by spray pyrolysis of commercial boehmite without the use of templating materials. Before spray pyrolysis, a boehmite slurry was prepared through thermal acid treatment of commercial boehmite with various concentrations of HNO3. The spray pyrolysis process produced spherical γ-Al2O3 particles with a size of 1 μm regardless of the pretreatment conditions. However, the dominant pore size of the produced γ-Al2O3 particles shifted from 35 nm to 3.5 nm when the molar ratio of [HNO3]/[AlOOH] increased from 0.06 to 0.24 during thermal acid treatment.",

keywords = "Boehmite, Mesoporous, Phase transformation, Spray pyrolysis, γ-Alumina",

author = "Jaehyung Choi and Yoo, \{Kye Sang\} and Kim, \{Sung Don\} and Park, \{Hyung Kyu\} and Nam, \{Chul Woo\} and Jinsoo Kim",

note = "Publisher Copyright: {\textcopyright} 2017 The Korean Society of Industrial and Engineering Chemistry",

year = "2017",

month = dec,

day = "25",

doi = "10.1016/j.jiec.2017.07.007",

language = "English",

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journal = "Journal of Industrial and Engineering Chemistry",

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TY - JOUR

T1 - Synthesis of mesoporous spherical γ-Al2O3 particles with varying porosity by spray pyrolysis of commercial boehmite

AU - Choi, Jaehyung

AU - Yoo, Kye Sang

AU - Kim, Sung Don

AU - Park, Hyung Kyu

AU - Nam, Chul Woo

AU - Kim, Jinsoo

PY - 2017/12/25

Y1 - 2017/12/25

N2 - Mesoporous spherical γ-Al2O3 particles were prepared by spray pyrolysis of commercial boehmite without the use of templating materials. Before spray pyrolysis, a boehmite slurry was prepared through thermal acid treatment of commercial boehmite with various concentrations of HNO3. The spray pyrolysis process produced spherical γ-Al2O3 particles with a size of 1 μm regardless of the pretreatment conditions. However, the dominant pore size of the produced γ-Al2O3 particles shifted from 35 nm to 3.5 nm when the molar ratio of [HNO3]/[AlOOH] increased from 0.06 to 0.24 during thermal acid treatment.

AB - Mesoporous spherical γ-Al2O3 particles were prepared by spray pyrolysis of commercial boehmite without the use of templating materials. Before spray pyrolysis, a boehmite slurry was prepared through thermal acid treatment of commercial boehmite with various concentrations of HNO3. The spray pyrolysis process produced spherical γ-Al2O3 particles with a size of 1 μm regardless of the pretreatment conditions. However, the dominant pore size of the produced γ-Al2O3 particles shifted from 35 nm to 3.5 nm when the molar ratio of [HNO3]/[AlOOH] increased from 0.06 to 0.24 during thermal acid treatment.

KW - Boehmite

KW - Mesoporous

KW - Phase transformation

KW - Spray pyrolysis

KW - γ-Alumina

UR - https://www.scopus.com/pages/publications/85025438991

U2 - 10.1016/j.jiec.2017.07.007

DO - 10.1016/j.jiec.2017.07.007

M3 - Article

AN - SCOPUS:85025438991

SN - 1226-086X

VL - 56

SP - 151

EP - 156

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Synthesis of mesoporous spherical γ-Al₂O₃ particles with varying porosity by spray pyrolysis of commercial boehmite

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Keywords

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